Connecting the PFC POP Trigger to a PFC Circuit

Inputs:
- VIN: Connect to the input voltage of the PFC, i.e. the AC line voltage.
- VOUT: Connect to the DC output voltage of the PFC.
- CONTROL: Connect to the switching control signal of the PFC, e.g. the MOSFET gate, the input to the gate driver, the controller PWM signal, etc.

Outputs:
- ISYNC: The synchronization current. Connect it to the nodes of the PFC circuit which directly or indirectly determine the switching frequency. This will vary based on the details of the PFC rectifier schematic. E.g., in a CCM PFC rectifier schematic, connect this in parallel to the output (load) current; in a CFM PFC rectifier circuit where a capacitor-based oscillator is used to generate the switching frequency, connect this in parallel to the oscillator capacitor; etc.